Alun arrives in Glasgow to play a gig at The Edge, a comedy club run by would-be promoter Max T. Max T should be looking after Alun, but he already has his hands full trying to keep Sandy Cervi, his second cousin and business partner, from taking over the club. In a bid to sort out some 'poontang' for himself and Alun, Max invites Eva, a psychiatric nurse and her photographer friend Christina along to the gig.

'Festival' is a black comedy set during the annual Edinburgh Fringe festival. The film is based around both the judging of a major comedy award and the performers at one of the smaller venues. Various plot strands interweave, including the bitter relationship between a famous self-obsessed British comic and his ever-suffering assistant, an actress debuting at the festival with a one-woman show about Dorothy Wordsworth and a depressed, rich housewife who spies on the stoned Canadian theatre troupe to whom she has rented out her house